Start by measuring the width and length of two
adjoining sides to the tennis court perimeter fence. The exact width and length will
depend on which kit you have purchased. Make an exact mark where the first corner
post is to be located; tentatively mark the other three corners.

The next step is to stretch masonry guide string
along these two sides and to square this corner. There is more than one way to square
corners. The easiest and perhaps most effective is to use the three-four-five
method. This method may actually be used to square any corner.